The Monster X solar generator is the perfect power source for my CPAP. I have been running my CPAP off of solar power for more than two decades using a system I put together myself. I was looking for an upgrade. My CPAP uses around 350 watt hours per night. This is with a heated hose set at one, and the humidifier set at two and pressure of 14. Doing the math, it would appear that I would be able to get three nights sleep out of the generator without any recharging. However, in actual use over these past three weeks, it looks like I will get more like 5 to 6 nights of sleep without needing a recharge. If I turn off the humidifier and the heated hose, it looks like I will get around 10 nights of sleep without any recharging. However, I have the solar generator hooked up to around 300 W of solar panels on the roof full time so it gets fully charged each day. My old system would recharge to 100% by around 3 o’clock in the afternoon. The same solar panels recharge the Monster generator to 100% by nine to 10 o’clock in the morning! I wanted a solar generator that would help me manage the frequent power failures that we have during storms and hurricanes. In addition, I wanted to have the freedom to go to places where electricity is not reliable and not worry about sleeping. This generator does that very well. I run my CPAP directly off of the 12 V receptacle on the solar generator. That way, I don’t have the power loss related to transforming the 12 V into 110 V for the inverter and then turning around and transforming the 110 V back to 12 V to run the CPAP by using the ‘brick’. I really appreciate the read outs on the solar generator. They provide me with a constant update as to the status of the system. However, I don’t think that they are linear nor 100% accurate. The display would, for example, indicate that I would be charging the system at around 30 to 50 W. Two hours later, the system would indicate 100% charge. That would appear to indicate an input of at most 100